Id defo advise packing a cheap pack of tiny babygros..(3quid in asda) We thought Charlie would be huge, but she was 6lb and even tiny baby stuff hung off her. we had to 'borrow' from the hospital until OH had been shopping for more stuff. She is still in tiny baby stuff now, but is slowly growing out of them.
As for toiletries i wouldnt bother taking much, the hospital provide most stuff, i just took nappies and cotton wool.
As it has been said, dont forget the bibs!!
I packed a bag for me, a bag for Charlie and a bag for OH which had CD's, money, snacks, and some toiletries and change of clothes for him.....there was no way he was going home if i wasnt LOL!!
Good Luck Hun xx